Missouri Weed Seeds

Polygonaceae (Smartweed family)

Broadleaf plant family

Many different species of plants in Missouri are known as smartweeds, some of which are among the state's most common weeds. Of about 30 genera of these plants worldwide, at least six are present in Missouri.

Buckwheat, wildPolygonum convolvulus

Dock, broadleafRumex obtusifolius

Dock, curlyRumex crispus

Knotweed, prostratePolygonum aviculare

LadysthumbPolygonum persicaria

Smartweed, hedgePolygonum scandens

Smartweed, PennsylvaniaPolygonum pensylvanicum

Sorrel, redRumex acetosella

For an idea of relative seed size, each photo contains a millimeter ruler. The distance between increments is 1 mm.